19. Let f(x, y) be a function that is differentiable everywhere. At a certain point P in the xy-plane, the directional derivative of f in the direction of 7-7 is 2 and the directional derivative 7+7 i+ is 3/2 of in the direction of What is the maximum directional derivative of f at P? A) 32 B) 432 C) 25 D) 6 E) 8

19. Let f(x, y) be a function that is differentiable everywhere. At a certain point P in the xy-plane, the directional derivative of f in the direction of 7-7 is 2 and the directional derivative 7+7 i+ is 3/2 of in the direction of What is the maximum directional derivative of f at P? A) 32 B) 432 C) 25 D) 6 E) 8

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter11: Topics From Analytic Geometry

Section11.4: Plane Curves And Parametric Equations

Problem 33E

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